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 Multiple Choice QuestionsMultiple Choice Questions

261.

Which of the following is a coelenterate ?

  • Sea lily

  • Sea squirt

  • Sea cucumber

  • Sea fan


262.

As per classification which of the following is correct ?

  • Ascaris, Pheretima, Grasshopper

  • Hydra, Pterido, Leucosolenia

  • Starfish, Grasshopper, Solen

  • Pila, Dentalium, Octopus


263.

Commercial silk is obtained from :

  • cocoon/ pupa

  • caterpiller

  • adult moth

  • both egg and adult moth


264.

In which of the following class of Annelida, one pair ovaries and several pair testes are found ?

  • Archiannelida

  • Hirudinea

  • Oligochaeta

  • Polychaeta


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265.

Ambulacral grooves are absent in the living forms of the Class

  • Crinoidea

  • Asteroidea

  • Ophiuroidea

  • Echinodermata


266.

Which of the following Phyla are included in Enterozoa?

  • Annelida, Mollusca, Porifera

  • Echinodermata, Hemichordata, Porifera

  • Mollusca, Arthropoda, Hemichordata

  • Porifera, Mollusca, Arthropoda


267.

Hydra receives impulses and stimuli through

  • nerve net

  • nematocytes

  • sensory cells

  • flame cells


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268.

The sites of the first, second and third moulting of the Ascaris larva are respectively

  • soil, lung and intestine

  • liver, stomach and intestine

  • soil, alveoli and alveoli

  • soil, intestine and lung


C.

soil, alveoli and alveoli

The development of Ascaris larva takes place outside the body of host in soil and its cleavage starts in shelled eggs. Moulting takes place in soil in shelled egg whereas second and third moulting take place in alveoli of lung. The final moulting takes place in intestine.


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269.

Class Crustacea has following features :

  • Cephalothorax, book lungs, chitinous exoskeleton

  • Head and thorax, biramous appendages, book lungs

  • Head and thorax, book lungs, chitinous exoskeleton

  • Cephalothorax, biramous appendages, gills


270.

Identify the correct statement

  • In amniotes last nerve is spinal accessory

  • In non- amniotes last nerve is vagus.

  • Optic is shortest nerve

  • Olfactory nerves has mixed fibres.


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